Title :
A Dual-Loop Antenna Design for Hepta-Band WWAN/LTE Metal-Rimmed Smartphone Applications
Author :
Yong-Ling Ban ; Yun-Fei Qiang ; Zhi Chen ; Kai Kang ; Jin-Hong Guo
Author_Institution :
Sch. of Electron. Eng., Univ. of Electron. Sci. & Technol. of China (UESTC), Chengdu, China
Abstract :
A simple direct-fed dual-loop antenna capable of providing hepta-band WWAN/LTE operation under surroundings of an unbroken metal rim in smartphone applications is proposed. The greatest highlight of this proposed antenna is that it provides a simple and effective multiband antenna solution for an unbroken metal-rimmed smartphone. The unbroken metal rim with 5 mm in height embraces the system circuit board of 130 × 70 mm2. Two no-ground portions of 10 × 70 mm2 and 5 × 70 mm2 are set on the top and bottom edge of the system circuit board, respectively. In-between the two separate no-ground portions, there is a system ground of 115 × 70 mm2 connected with the unbroken metal rim via a small grounded patch which divides the unbroken metal rim into two strips. Finally, a dual-loop antenna is formed by combining the inner system ground and two strips. This proposed dual-loop antenna is capable of covering GSM850/900/DCS/PCS/UMTS2100/LTE 2300/2500 operating bands. Detailed design considerations of the proposed antenna are described and both experimental and simulation results are also presented and discussed.
Keywords :
3G mobile communication; Long Term Evolution; loop antennas; mobile antennas; multifrequency antennas; smart phones; wide area networks; DCS; GSM; LTE; PCS; UMTS; hepta-band WWAN-LTE metal-rimmed smartphone Applications; multiband antenna solution; simple direct-fed dual-loop antenna design; small grounded patch; unbroken metal rim; Antennas; Impedance; Impedance matching; Metals; Printed circuits; Resonant frequency; Loop antenna; WWAN/LTE antenna; unbroken metal rim;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2014.2368573
